---
title: simd_fast_length
framework: simd
role: symbol
role_heading: Function
path: simd/simd_fast_length-59ep6
---

# simd_fast_length

Returns the fast length of a vector.

## Declaration

```occ
static float simd_fast_length(simd_float2 __x);
```

## See Also

### Length and Distance Functions

- [simd_length](simd/simd_length-3ob5d.md)
- [simd_precise_length](simd/simd_precise_length-77xwk.md)
- [simd_length_squared](simd/simd_length_squared-3e32j.md)
- [simd_distance](simd/simd_distance-598wa.md)
- [simd_fast_distance](simd/simd_fast_distance-2jlix.md)
- [simd_precise_distance](simd/simd_precise_distance-8hrn8.md)
- [simd_distance_squared](simd/simd_distance_squared-7zevh.md)